Shelf-life of Extra Virgin Olive Oils from Southern Italy

Barbarisi, Costantina; Stasio, Michele Di; Cara, Francesco La; Nazzaro, M.; Siano, Francesco; Coppola, Raffaele; Volpe, Filomena; Mattia, Anna De; Volpe, Maria Grazia

doi:10.2174/157340131003140828122901

Cited by 9 publications

(7 citation statements)

References 28 publications

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“…According to our previous findings , we decided to use a reference model based on monocultivar EVOO samples coming from specific production areas of interest. The model refers to a specific harvesting season and was built and intended for use within the EVOOs optimal shelf life . 1 H NMR spectra were reduced in buckets representing the entire data set, as reported in the Materials and methods, and Section 2.4 (unsupervised, PCA and supervised, PLS‐DA and OPLS‐DA) were applied.…”

Section: Resultsmentioning

confidence: 99%

“…In principle, reference and test set oils should also result from the same harvesting season. On the other hand, the EVOOs shelf life is limited and very recent work also suggests that the overall variations for Coratina cultivar based oils are small even in the case of seasons with very different climatic conditions . This methodology, which does not substitute the classical analytical approach for standard quality ranking procedures, could be very useful both for industry, and consumers by providing a tool to verify the label declaration of EVOOs from specific geographical origin.…”

Section: Discussionmentioning

confidence: 99%

“…The information reported on the label of each sample was described in details in Tables and . The analyses were performed by using 1 H NMR spectroscopy and MVA, within the maximum optimal shelf life (12–18 months from the date of bottling) . A work flow chart illustrating the procedures sequence described in the present paper is depicted in Fig.…”

Section: Methodsmentioning

confidence: 99%

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¹H NMR spectroscopy and multivariate analysis as possible tool to assess cultivars, from specific geographical areas, in EVOOs

Girelli

Coco

Fanizzi

2015

Euro J Lipid Sci & Tech

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In this work, we tested a NMR-based MVA method to assess the authenticity of EVOOs cultivar (from specific origin) declaration by using a total of over a 100 samples coming from different selected areas of Southern Italian Regions (Apulia and Calabria). We built a reference model, by performing unsupervised PCA and supervised PLS-DA, OPLS-DA analyses on the 1 HNMR spectra of a 40 monovarietal EVOOs training set. These included 10 Coratina (the most popular Apulian cultivar) together with 10 Picholine, 10 Ogliarola Barese, and 10 Carolea samples (the most common Coratina bitterness smoothers cultivars used in Coratina-based blends). The training set originated PLS-DA reference model was profitably used to assess the class membership for a series of declared monocultivar EVOO samples and to obtain a clear indication for the composition of Coratina-based blends. By using the same reference model we analyzed in blind a test set formed by 40 unknown samples coming from the same areas and we predicted their class or blend composition affinity (later confirmed by suppliers as Coratina-or Coratina-based blends). This proposed method could be a simple and quick tool to assess, also for trading purpose, the cultivar (from given geographical areas) declaration of labeled EVOOs.Practical applications: EVOO is one of the most important element of the Mediterranean diet with its numerous health benefits due to the chemical composition (unsaturated fatty acids and minor components). For this high commercial value in the recent years, EVOO has been processed to adulteration process with seeds oils, refined pomace, and esterified oils with serious damage to its quality. In order to guarantee the quality of this important product, EU Regulation 182 of March 6, 2009, stated the obligatory labeling of EVOO samples with the geographical production area for all European countries. Surprisingly, this regulation lacks of an official methodology to assess the origin and the cultivar of EVOOs. A quick and reproducible method to check the label declaration of commercial EVOOs could be attractive for industry and ensure transparency for consumer choices.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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¹H NMR spectroscopy and multivariate analysis as possible tool to assess cultivars, from specific geographical areas, in EVOOs

Girelli

Coco

Fanizzi

2015

Euro J Lipid Sci & Tech

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“…These latter were constituted by two technical replicates from each original (C1-C5 and T-T5) batch EVOO sample (for a total of 10 C and 10 T samples), two batches oil sums: Cs = C1 + C2 + C3 + C4 + C5 and Ts = T1 + T2 + T3 + T4 + T5) (Figure 1) and nine further blends (from 10/90 to 90/10% Cs/Ts oil by 10% increase step). The analyses were performed by using 1 H-NMR spectroscopy and multivariate analysis (MVA), within the maximum optimal shelf life (12-18 months from the date of bottling) [27].…”

Section: Samplingmentioning

confidence: 99%

“…The analyses were performed by using 1 H-NMR spectroscopy and multivariate analysis (MVA), within the maximum optimal shelf life (12-18 months from the date of bottling) [27].…”

Section: Samplingmentioning

confidence: 99%

Tunisian Extra Virgin Olive Oil Traceability in the EEC Market: Tunisian/Italian (Coratina) EVOOs Blend as a Case Study

2017

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Abstract:In order to check the reliability of an NMR-based metabolomic approach to evaluating blend composition (and declaration), a series of 81 Italian/Tunisian blends samples at different percentage composition (from 10/90 to 90/10% Coratina/Tunisian oil by 10% increase step) were prepared starting from five Coratina (Apulia) and five Tunisian extra virgin olive oil (EVOO) batches. Moreover, a series of nine binary mixtures blend oils were obtained, starting from the two batches' oil sums. The models built showed the linear relationship between the NMR signals and the percentage composition of the blends. In particular, a high correlation with the percentage composition of blends was obtained from the partial least squares (PLS) regression model, when the two batches oil sums were used for the binary mixtures of blend samples. These proposed methods suggest that a multivariate analysis (MVA)-based NMR approach-in particular PLS regression (PLSR)-could be a very useful tool (including for trading purposes) to assess quantitative blend composition. This is important for the sustainability of the goods' free movement, especially in the agrifood sector. This cornerstone policy of current common markets is also clearly linked to the availability of methods for certifying the origin of the foodstuffs and their use in the assembly of final product for the consumer.Keywords: extra virgin olive oil; commercial purpose; 1 H-NMR spectroscopy; EVOOs origin assessment; multivariate statistical analysis; PLSR; projections to latent structure by means of partial least squares regression

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Phenolic Profile and Thermal Stability of Monovarietal Extra Virgin Olive Oils Based on Synchronous Fluorescence Spectroscopy

et al. 2020

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Shelf-life of Extra Virgin Olive Oils from Southern Italy

Cited by 9 publications

References 28 publications

¹H NMR spectroscopy and multivariate analysis as possible tool to assess cultivars, from specific geographical areas, in EVOOs

¹H NMR spectroscopy and multivariate analysis as possible tool to assess cultivars, from specific geographical areas, in EVOOs

Tunisian Extra Virgin Olive Oil Traceability in the EEC Market: Tunisian/Italian (Coratina) EVOOs Blend as a Case Study

Phenolic Profile and Thermal Stability of Monovarietal Extra Virgin Olive Oils Based on Synchronous Fluorescence Spectroscopy

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Shelf-life of Extra Virgin Olive Oils from Southern Italy

Cited by 9 publications

References 28 publications

1H NMR spectroscopy and multivariate analysis as possible tool to assess cultivars, from specific geographical areas, in EVOOs

1H NMR spectroscopy and multivariate analysis as possible tool to assess cultivars, from specific geographical areas, in EVOOs

Tunisian Extra Virgin Olive Oil Traceability in the EEC Market: Tunisian/Italian (Coratina) EVOOs Blend as a Case Study

Phenolic Profile and Thermal Stability of Monovarietal Extra Virgin Olive Oils Based on Synchronous Fluorescence Spectroscopy

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¹H NMR spectroscopy and multivariate analysis as possible tool to assess cultivars, from specific geographical areas, in EVOOs

¹H NMR spectroscopy and multivariate analysis as possible tool to assess cultivars, from specific geographical areas, in EVOOs